Recently, we were faced with a situation where a Weblogic admin server was failing to start, but was leaving very little info in the logs to point to the reason why, so we had to dig a bit deeper to find the cause.

This is the error message as it appeared in the weblogic log:

Read more… Troubleshooting Weblogic Authentication with the Truss Command

First, I made a few modifications to the nodemanager start/stop scripts:

(on weblogic 8.1)

in startNodeManager.sh, I added a -D tag to be able to easily spot the nodemanager process when doing a ‘ps’ by adding this line:

Read more… Controlling weblogic node manager with solaris smf as non-root

To trace a java thread from a thread dump to the corresponding thread on Solaris 10, you can find the LWP using pstack by converting the NID (which corresponds to the LWP ID on Solaris) and matching it up in the pstack output, or by finding the TID listed in the pstack output.
Read more… Matching java thread nid & tid to solaris 10 threads using ‘pstack’